LOS ANGELES — Catherine Zeta-Jones is in negotiations to join the cast of the upcoming “Rock of Ages” movie in a role that was not part of the original stage version, the Hollywood Reporter said Wednesday.

“It’s a character that we only really came to in the last month,” director Adam Shankman said Wednesday, as he revealed that the new role — a villainess — had been created especially for the film adaptation of the Broadway rock musical.